blessing



(No Model.)

PUMP VALVE. No. 272,198. Patented Feb. 13,1883.

meme.

UNITED STATES PATENT 0 m.

JAMES H. BLESSING, 0F ALBANY, NEW YORK.

PUMP- VALVE.

SPECIFICATION forming partof Letters Patent No. 272,198, dated Febnrary13, 1883.

Application filed March 6, 1882. (No model.) i

To all whom it may concern:

Be it'known that 1, JAMES H. BLESSING, of the city of Albany and Stateof New York, have invented a new and useful Improvement in Pump-Valves,of which the following is a full, true, and exact description, referencebeing had to the accompanying drawlng.

My invention relates to a new combination of receiving and dischargingvalves for waterpumps or for similar contrivances; and it consists in anarrangement by which said valves may be readily removed from their seatsby the removal of but a single head. and in an arrangement forpreventing the jar or concussion due to the seating of said valves, andrelieving or reducing the wear or destruction of the valve and seatsurfaces which might otherwise result.

In my drawing the valves are shown as applied to adouble-actingpump-chamber. The drawing shows the valves partly in section at bothends of said pump-chamber. The valvechambers are arranged in the figureat the side of the pump-cylinder B.

I will describe one set of valves, the other set being a duplicate. Thevalves are shown as arranged in a c lindrical chamber formed in thecastingV. This chamber-communicates with the deliverychamber A by meansof the port S, and with the receiving-chamber Aby' means of the port T,the chambers A and A being-separated by the partition \V, forming partof the casting V. Into the bottom of the cylindrical valve-chamber isdropped the supporting'frame E, which is preferably made of composition.Through this-supporting-frame the opening T, previously referred to, iscut. In the center of this frame is cut acylindrical chamber adapted toreceive the lower end of the receiving-valve, so as to support the sameand keep it in alignment. Upon the frame E is placed the cyliudrically-'shaped piece L, which is arranged to drop within the chamber V, andhas a lower flange projecting and fittinginside of the fraineE. Aspaceis' allowed between L and E to receive an elastic buffer or ring,(marked N.) I prefer to make 'this ringof rubber; but variouscompositionsmight be employed. The ring or packing should be somewhatless in size than the receiving-chamber, so as to allow for a certainamount of elasjecting within the part L, and is arranged to' allow forthe reception of an elastic packing, 0, between M and L, as shown. Theupper part of M serves as a seat for the dischargevalve D. This valvehas a cylindrical hole cut into its stem from the bottom,but not passingcompletelythrough, it. The valve-chatnher is closed by the cap F, havinga cylindrical opening for receiving the upper end, K, of the valve D,which is thereby held firmly in alignment. The cap F is held in positionby thescrew-bolts R; In orderto place this valve in position, the pieceEis first arranged in the bottom of the chamber V. The packing N is thenplaced in a position. The valve-sear L is then dropped into the chamberV, thereby holding the packingNin position. Thevalve U is then droppedinto the tube E,so as to seat upon the valveseat X. The packing 0 beingthen placed in position, the valve-seat M is droppedinto the chamberV,so as to surround and hold the same securely. The valve D is thendropped upon its seat, surrounding the upper stem, G, of the valve 0,and, finally, the cap is screwed down upon the top of the chamber. Thechamber between the valves communicates by the port I with thepump-chamber in the usual way. 1

- It willoi' course be understood that the frame E and other portionsneed not be made solid, and it will be observed that both valves can bereadily made of the'same size, and that by removing the cap or bonnetboth the valves and valve-seats can be readilygronnd or trued up withbutlittle expense.

It is apparent that the method of packing by the interposition ofanelastic material beneath the valve-seat may be utilized in other formsof valves besides those shown.

Whatl claim as "tuy invention, and desire to secure by Letters Patent,is-

1. The combination of a metallicvalve seating upon a metallic seat andafree elastic cushion placed beneath said valve-seat and seat,substantially as described. I

2. The combination of a metallic valve, a metallic valve-seat, and anelastic cushion beneath said seat, and inclosed between said seat andthe valve-casing, so as to be protected from the action of the steam orwater flowing through the valve, substantially as described.

3. The combination of the snpportingd'rame E, val ve-seat L, valve 0,valve-seat M, valve 1 5 D, and cap F, whereby on the removal of said capthe valves and valve-seats may be immediately removed, substantially asshown and described.

4. The combination of the frame E, packing 20 N, valve'seat L, valve "0,packing O, valveseat M, valve D, and cap F, substantially as shown anddescribed. 1*

JAMES H. BLESSING.

